Not even an Upper East Side hospital room is safe from gunfire in the city.
A woman recovering from hip surgery was cut by broken glass when a stray bullet crashed through a window of her eighth-floor room at the Hospital for Special Surgery on Friday, cops said.
And her rabbi husband — who had been sleeping under the window — “miraculously” woke up for prayers less than a minute before the bullet hit at 5:45 a.m., her sister said.
“I freaked out. I got scared for my sister,” said Mindee Katz, 23, recalling when she learned of the shot in Rivka Tenenboim’s hospital room.
“My brother-in-law had just gotten up. It was a miracle that he had gotten up for prayers.”
NYPD investigators found a fragment of a copper-jacketed bullet lodged in the windowpane of the north-facing room and a spent shell casing — likely from a 9mm handgun — on the southbound service road of the nearby FDR Drive.
Tenenboim, 30, had been at the hospital, on East 70th Street and York Avenue, since her procedure Tuesday.
Katz said Tenenboim could not have been targeted.
“I don’t understand why my sister’s room would be a target,” she said. “She is an intelligent sweetheart who would do anything for a stranger.”
Tenenboim, who suffered cuts on her face, was too shaken up to comment Friday.
“I don’t want to talk about it,” she told The Post as she recovered in a new room with hubby Nochem at her side.
The Orthodox Jewish couple, who have three young children, live in Hewlett, LI, where they host large Shabbos dinners every Friday night, the Jewish Web site Community News Service reported.
A hospital spokeswoman said, “The NYPD in conjunction with the hospital is conducting a thorough investigation of a bullet as the cause for the window break.”
Another patient, at the hospital for foot surgery, said he wasn’t fazed by the stray slug.
“In my neighborhood, people shoot off guns at the hawks to protect the pigeons,” said Will Anderson, 41, a photographer from Bushwick, Brooklyn.
“This is America. This is New York City. Guns are everywhere, and stray bullets just happen.”
The shooting comes as the city is seeing a spike in the number in shooting victims this year, while gun seizures have gone down.
An elderly woman who lives nearby but didn’t want to be identified said she regularly sees unsavory characters gathering at the river near where the shell casing was found.
“There are sometimes drug users down by the river, and people who attack the homeless,” said the woman, 87.
Additional reporting by Josh Saul